(a)
(b)
(c)
(d)
(e)
(f)
Figure 1: Transaxial thoracic images for transmission (a and d), 18F-FDG emission (b and e) and 11C-PK11195 (c and f) in a normal subject (a–c), and a patient with chronic obstructive pulmonary disease (d–f) from Jones et al. (2003) [100].